class_docstr: Mutate the input choice nodes.
code: def __init__(self, nodes: List[Node]):
      super().__init__(label=nodes[0].operation.parameters["label"])
      self.nodes = nodes
  
imports: from __future__ import annotations
  from typing import Any, List, Tuple, Dict, Iterable, cast
  from nni.mutable import MutableExpression, Categorical, frozen_context, label_scope
  from nni.nas.space import Graph, GraphModelSpace, Node, StationaryMutator, Mutator
  from nni.nas.space.graph_op import Cell
label_desc: Use image node_id 1 to create a new InputChoiceMutator object from inherited base classes: StationaryMutator with example: obj = InputChoiceMutator(nodes)